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E. J. GERDOM & C. W. SOHINDLER. LUBRIGATOR.

No. 77,974. Patented May19, 1868.

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F F. GERDOM AND G. W. SGHINDLER; OF ALBANY, NEWTYORK.

Letters Patent Nq. 77,914, datedM'ay 19, 1868.

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1'0 ALL WHOM IT MAY CONCERNz- Be it known that we, E. E. GERDOM and G.W. SdHINDLER, of Albany, in the county of Albany, and in the State ofNew York, have invented a. new and improved Grease-Cup and wedo herebydeclare that the following a. full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and use thesame, reference being bad to the accompanying drawing, forming part ofthis specification, in .n-hich' drawing-- Figure 1 represents a verticalcentral section of this invention. Figure 2 is a horizontal section ofthe same. Similar-letters indicate corresponding parts. This'inventionrelates'to a. 'grease-cup, which is provided at its bottom with atubularconductor composed of a copper and zinc element. t;

From the inner end of the tubular conductor extends a stop, whichservesthe double purpose of conducting the .heat through the grease, andof agauge to bring the grease-cup in the proper position in relationto'the shaft'to'b'e lubricated. -A represents a grease-cup, which ismade of sheet metal, or any other suitable material, and provided with atubular leg, B, and with a lid, 0, which is attached to the body of'thecup by a hinge-join't,-and secured by a springmzitch, or which may beattached by a screw-thread, or in any other suitable manner. The bottomend of the leg B is scalloped, so'that the some is not liable to clog'upif it should come in contact with the shaft to be lubricated,

.Through the interior ofthe leg B extends the tubular oondu'otorD. whichis composed of a copper element,- a, and a. zinc element, 6,- made inthe form of tubes, as shown, or in any other suitable form or shape.

Said elements'are secured in a disk, 0 and they are surrounded by'aspiral conductor, 11. Their lower ends are flush with each' other, sothat, if the grease-cup isplnced-in position on the shaft to belubricated, the ends of both elements will he in contact with thesurface of said shaft.

From the dish a rises a stop, e, which extends up close to the innersurface of the lid, and which serves to adjustthe cup in the properposition, so that the tubular eonducterwill bear upon the periphery ofthe shaft to be lubricated, without permitting theleg B to come incontact with said shaft. If the cup is depressed to far, so that the legwill bear against the shaft, the step e prevents the lid beingclosed-andhy the very act of closing the lid down, the cup israised upto the proper position.

The cup is filled with grease, the melting-point of which is at atemperature of from 100 to 110, so that it will remain solid at therdinary temperature, and begin to melt whenever it isheated beyondits-melting'- point. On the topof the grease we place a. disk,f,which'is subjected to the action of a spring, g, 26 that the same is-continuziliy depressed on the grease,.cnd the grease is-held-dow'n tothe bottom of the cup.

When the shaft revolves and remains at its ordinary temperature, thegrease in the cup remains solid, but i as soon as the shaft begins toheat. a small quantity of the grease is melted and'allowe d to pass downthrough the tubular conductor D.

By these means a suflicient supply of grease is conducted .to the shaftwhenever the shaft requires it, but

when the shaft does not require to be lubricated, the'grease sets, andall 'waste of lubricating-material is avoided. What we claim as new, anddesire to secure by Letters Patent, i's- 1. The step e, in combinationwith the tubular conductor D, leg B, and top of. cup-1i,substantially-as and for the purpose set forth;

2. The disk f and spring 9, in combination with the stop e and tubularconductor D of the cnp A, suhstzmtiizlly as and for the purposedescribed.

This specification signed by us, this-27th day of November, 1867.

i E. F. -GEBDOM, G. W. SUHINDLER. Witnesses:

Gnsrsv Ben's; W. -HAUFF.

